Rational Constrained choice The most preferred affordable bundle is called the consumers ordinary DEMAND(一般需求) at the given prices and budget. Ordinary demands will be denoted by X, (p1,P2, m)and X2 (p1,p2, m)Rational Constrained Choice The most preferred affordable bundle is called the consumer’s ORDINARY DEMAND （一般需求）at the given prices and budget. Ordinary demands will be denoted by x1 *(p1 ,p2 ,m) and x2 *(p1 ,p2 ,m)